US863356A

US863356A - Type-writer attachment.

Info

Publication number: US863356A
Application number: US33931806A
Authority: US
Inventors: George W Campbell
Original assignee: VICTOR TYPEWRITER Co
Current assignee: VICTOR TYPEWRITER Co
Priority date: 1906-10-17
Filing date: 1906-10-17
Publication date: 1907-08-13
Anticipated expiration: 1924-08-13

Description

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G. GAMPBELL.-

TYPE WRITER ATTACHMENT.

APPLIGATION FILED 00117, 1906.

2 SHEETS-SHEET 2.

A TTOHNE Y S UNITED STATES PATENT oEEicEj.

GEORGE W. CAMPBELL, OF NEW YORK, N. Y., SSIGNOR, BY MESNE ASSIGNMENTS, TO VICTOR TYPEWRITER COMPANY.

. TYPE-WEITER specification of Letters Patent.

ATTACHMENT.

Application filed October 17,1906.v Serial No. 339,318.

To all whom it may concern:

Be it known that I, GEORGE W. CAMPBELL, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Type- Vriter Attachment, ol which the following is a lull, clear, and exact description.

This invention relates to improvements in attachments for typewriters, the object being to provide a simple means for holding the paper in engagement with the platen roller upon reaching practically the extreme end of the paper, on shifting from the lower to the upper case type, thus permitting a line to be printed close to the end of the paper as is sometimes desired.

I will. describe a typewriter attachment embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures. i

Figure 1 is sectional elevation of a portion of a typewriter with an attachment embodying my invention thereon; and Fig. 2 is a front view showing the attachment.

Referringto the drawings 1 designates the platen of a typewriter, mounted in the usual frame 2 having pivotal connection 3 with the carriage 4. The frame carrying the platen is moved upward and downward in the usual manner; that is, by means of a crank lever 5 mounted on a rod 6 and from thedownwardly depending portion of which a rod 7 extends to the shift-key.- Attached to the end members of the frame 2 are guide plates 8 between which the shifting rod 9 is movable, and having swinging connection with this rod 9 is a bar l() having a downward extension 11 connecting with a link 12 the rear end of which has swinging connectin with a fixed part 13. The bar 12 has pivotal connection with lugs 14 attached to said bar 9.

It will be noted in Fig. 1 that the upper pivotal connection of the rod 1l is rearward ofthe rod 9, and it will further be noted that the iulcrum point of the angle lever 5 is forward of the pivotal point 3 for the frame 2, the object of which will hereinafter appear.l

Attached to the bar 10 is a paper-holding attachment consisting of a plate having a portion 15 extended upward at an angle and then projected vertically as indicated at 16. The upper end of the portion 16 is designed to engage against the paper on the platen and its head portion 19 is provided with a central slot'or opening 18 through which the type may'pass to make the impression on the paper. l I

The upper end of the head 17 is provided with a scale 19 corresponding in its spacing to the usual scale20 on the typewriter, but below this scale 20 is an auxiliary scale 21 the spaces on which are indicated Aby the pointer. 22carr'ied by dthe paper-holding device. It will be noted that the spacings on the'auxiliary scale 21 alternate with the spacings on the usual'scale 2.0.so that an operator by glancing at the pointer 22 may readily locate the position while a numeral or space mark is covered by the paper-holding device as indicated in Fig. 2. In operation, when Ait is necessary toA shift the platen, the shift-key is operated in the usual manner and the platen moved upward as indicated by dotted lines in Fig. 1, and the upper portion of the paper-holding device will also be moved upward but will at all times engage with the paper because the said device swings in a' lesser 'arc of the circle than does the frame sup- -porting the platen, this of course being caused by the bar 6 being placed forward of the pivotal point or points 3; therefore, it will be seen that the head 19 of the paper-holding device will hold the paper at its extreme end.

7 5 Having thus described my invention, 1 claim as new and desire to secure by Letters Patent:

1. In a typewriter, in combination, a mainframe, a swinging frame, a platen carried thereby, a holding plate pivotally supported on said frame near the face of said platen and adjacent to the point where the type strike, means for shifting said swinging frame in changing from upper to lower case type, and means operated by the shifting movement to maintain said holding plate on said platen. 1

2. In a typewriter, in combination, a main frame, a carriage, a swinging frame `on said carriage, a platen carried by solid swinging fra e, a bar supporting saidcarriage, 'means for operating saidsbnr to shift said swinging frame to change from upper or .ower case type, a holding plate, a bar carrying the same and pivotally mounted on said first named bar, said last named bar having an extension, and a link connecting said extension with said frame and alfording means for holding said plate against said platen when said swinging frame is shifted.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE W. CAMPBELL.

Witnessesz ANNA L. CAMPBELL, L. H. PERRY.